Calculating Percentage of Literates in City A

To find the percentage of literates in City A, we need to use the data provided in the table. The table gives us the total population, the number of literate individuals, and the number of illiterate individuals for different cities.

Here is the given data table:

The question specifically asks for the percentage of literates in City A.

Understanding Percentage of Literates

The percentage of literates in a city is calculated by dividing the number of literate people by the total population of the city and then multiplying the result by 100. The formula is:

\( \text{% of Literates} = \left( \frac{\text{Number of Literate People}}{\text{Total Population}} \right) \times 100 \)

Applying the Formula for City A

From the table, for City A:

• Total Population = 200
• Number of Literate People = 150
• Number of Illiterate People = 50

We can verify that the sum of literate and illiterate people equals the total population for City A: $150 + 50 = 200$.

Now, let's calculate the percentage of literates in City A using the formula:

\( \text{% of Literates in City A} = \left( \frac{\text{Literate in City A}}{\text{Population of City A}} \right) \times 100 \)

Substitute the values for City A:

\( \text{% of Literates in City A} = \left( \frac{150}{200} \right) \times 100 \)

Simplify the fraction:

\( \text{% of Literates in City A} = \left( \frac{15}{20} \right) \times 100 \)

\( \text{% of Literates in City A} = \left( \frac{3}{4} \right) \times 100 \)

Perform the multiplication:

\( \text{% of Literates in City A} = 0.75 \times 100 \)

\( \text{% of Literates in City A} = 75 \)

So, the percentage of literates in City A is 75%.

This calculation matches one of the given options.

Let's briefly look at how the other missing values in the table could be calculated, although it's not required to answer the question about City A.

• For City B: Population = Literate + Illiterate = 200 + 100 = 300. % of literates = (200/300) * 100 $\approx$ 66.67%, which matches the given 66.6 (likely rounded).
• For City C: % of literates = (50/150) * 100 = (1/3) * 100 $\approx$ 33.33%.
• For City D: Illiterate = 90. % of literates = 25%. This means 75% are illiterate. If 75% of Population = 90, then Population = 90 / 0.75 = 120. Literate = Population - Illiterate = 120 - 90 = 30. % of literates = (30/120) * 100 = (1/4) * 100 = 25%. All values align.

However, the question only asked for City A, which we calculated to be 75%.

Summary of City A Data

• Population: 200
• Literate: 150
• Illiterate: 50
• Percentage of Literates: 75%

The percentage of literates in City A is indeed 75%.

Revision Table: Key Concepts for Data Interpretation

Additional Information: Understanding Literacy Rates

Literacy rate is a crucial demographic indicator used worldwide. It reflects the proportion of the population aged 7 years and above who can both read and write with understanding in any language.

• Importance: High literacy rates are often linked to socio-economic development, better health outcomes, and increased civic participation. Education is fundamental for personal and societal growth.
• Calculation Variation: While our problem used total population, literacy rates are often calculated for a specific age group (e.g., 15 years and above, or 7 years and above) to better measure the effectively literate part of the population capable of contributing to the economy and society in ways that require reading and writing skills.
• Global Context: Literacy rates vary significantly across countries and regions, influenced by factors like access to education, poverty, gender inequality, and conflict. International organizations like UNESCO track global literacy trends.
• Data Sources: Data for literacy rates typically comes from national censuses, large-scale sample surveys, and administrative data from schools.

Analyzing data like the one presented in the table helps in understanding the educational status within different populations and can inform policy decisions related to education and development.